[Shadow9mm]

Subsonics does NOT negate the need for a suppressor. It does make it nicer to shoot imho, no Crack with the boom. But you will still leave your ears ringing if you try to shoot subsonics unsuppressed without hearing protection. Its not a pleasant experience I assure you.

There is no middle ground. You are either supersonic or subsonic.

To retain the most energy downrange switch to 147g bullets. Given all loads being subsonic, the heaviest bullet will have and retain the most energy.

One other trick, pick a powder that uses the least powder to get that 1050fps. Less powder means less gasses, less gas means the suppressor has to do less work, quieter load.